Classification
363 - Other social problems & services
620 - Engineering & allied operations
354
900 - History & geography
600 - Technology
348
700 - The arts; fine & decorative arts
172
333 - Economics of land & energy
164
330 - Economics
91
380 - Commerce, communications & transportation
72
000 - Computer science, information & general works
60
580 - Plants (Botany)
54
610 - Medicine & health
54
551 - Geology, hydrology & meteorology
49
140 - Specific philosophical schools
41
320 - Political science
37
576 - Genetics & evolution
30
720 - Architecture
28
370 - Education
25
581 - Specific topics in natural history
23
800 - Literature & rhetoric
20
340 - Law
19
540 - Chemistry & allied sciences
18
300 - Social sciences
17
630 - Agriculture & related technologies
16
500 - Natural sciences & mathematics
15
414 - Phonology & phonetics
12
658 - General management
12
400 - Language
11
100 - Philosophy & psychology
10
304 - Factors affecting social behavior
8
170 - Ethics
5
410 - Linguistics
4
530 - Physics
4
770 - Photography, photographs & computer art
4
200 - Religion
2
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
612 - Human physiology
2
120 - Epistemology, causation & humankind
1
360 - Social problems & services; associations
1
364 - Criminology
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1